Examiner: KESSLER, CHRISTOPHER S

Analysis

Christopher S. Kessler is an examiner within Tech Center 3600, specifically assigned to Art Unit 1733. Over his tenure, he has reached a resolution in 817 cases. His career allowance rate is 60.1 percent, which indicates a moderate level of difficulty for applicants. This baseline suggests that while 60.1 percent of the applications result in a grant, practitioners must be prepared for a rigorous examination process that requires clear technical differentiation and robust legal arguments.

The data reveals that examiner interviews are a particularly effective strategy for this examiner, as evidenced by an interview lift of 14.4 percent. This positive lift suggests that Kessler is open to verbal clarifications and that direct engagement can successfully bridge gaps in understanding that written responses might not resolve. For practitioners, scheduling an interview should be considered a high-priority tactic when facing persistent rejections or complex technical objections.

Applicants should also account for the timeline of prosecution, as the median days to allowance is 1408. This duration indicates that the path to a patent grant with Kessler is relatively long. This timeline, combined with the 60.1 percent allowance rate, necessitates a patient and persistent approach to prosecution. Strategic planning should include early interviews to potentially shorten this cycle and capitalize on the 14.4 percent lift they provide.